Overcoming magnetic disorder is key to exploiting the unique properties of quantum anomalous Hall (QAH) insulators. A Monash-led team has demonstrated that the breakdown in topological protection is caused by magnetic disorder, explaining previous observations that topological protection could be restored by application of stabilizing magnetic fields. Overcoming magnetic disorder is key to exploiting the unique properties of quantum anomalous Hall (QAH) insulators. A Monash-led team has demonstrated that the breakdown in topological protection is caused by magnetic disorder, explaining previous observations that topological protection could be restored by application of stabilizing magnetic fields. Condensed Matter Phys.org – latest science and technology news stories